Results 71 to 80 of about 16,176 (259)

Engineering Pluripotent Stem Cells‐Derived Inner Ear Organoids With Enhanced Maturation and Reproducibility by Micro‐Topographical Cues

open access: yesAdvanced Materials, EarlyView.
Micro‐topographical cues applied through temporally controlled microscale confinement improve the reproducibility, spatial organization, and neurosensory‐associated features of pluripotent stem cell‐derived inner ear organoids. Integration with a vascularized organoid platform further enables controlled investigation of vascular‐epithelial interactions
Harshita Sharma   +15 more
wiley   +1 more source

Research on Weighting Efficiency Improvement for PV Inverter Based on Segmental Modulation

open access: yesKongzhi Yu Xinxi Jishu, 2016
There are limitations in the evaluation strategy on power generation efficiency of PV grid-connected inverter with maximum conversion efficiency.
ZHAO Xianggui   +3 more
doaj  

Measuring and Manipulating Density of States in Two‐Dimensional Materials With Electrochemical Capacitance

open access: yesAdvanced Materials Interfaces, EarlyView.
We report electrochemical quantum capacitance spectroscopy as an ambient, in situ probe for defect‐mediated electronic structure at 2D material interfaces. Using monolayer MoS2, the method resolves band edges and vacancy states, tracks sulfur‐vacancy evolution during hydrogen evolution, and links interfacial density‐of‐states changes to nearly ...
Mengyu Yan   +9 more
wiley   +1 more source

Additively Manufactured Porous Ceramics as Tunable Dielectrics for Passive Temperature Sensing

open access: yesAdvanced Materials Technologies, EarlyView.
Porous ceramic lattices, 3D‐printed from a multicomponent oxide ink, are integrated with LC resonators for passive wireless temperature sensing. By tuning porosity, the dielectric properties and RF response are engineered to produce distinct resonant frequency shifts with temperature. The results establish a structure‐driven approach to customizing the
Sogol Heidarishahrivar   +5 more
wiley   +1 more source

Harmonic-Controlled Space Vector Modulation With Reduced Switching Transitions for Two-Level Nine-Phase Motor Drives

open access: yesIEEE Open Journal of Industry Applications
Multiphase motor drives offer several advantages over their three-phase counterparts, including reduced power per phase, lower voltage or current levels while maintaining the same output power, and enhanced fault tolerance.
Rodrigo R. Bastos, Braz J. Cardoso Filho
doaj   +1 more source

Hierarchical Multi‐Material Architectures With Gradient Design for Dynamic‐Range Flexible Tactile Sensing

open access: yesAdvanced Materials Technologies, EarlyView.
Hierarchical multi‐material TPMS lattices are engineered as flexible tactile sensors by combining soft and stiff elastomeric layers with a conformal conductive coating. The bilayer architecture delivers sensitivity at low pressures while maintaining a broad detectable range under large loads, enabling reliable pressure and vibration monitoring for ...
Reza Noroozi   +3 more
wiley   +1 more source

SYNCHRONOUS OPERATION OF FIVE-PHASE CONVERTERS IN LINEAR MODULATION REGION

open access: yesProblems of the Regional Energetics, 2007
This paper presents results of the development and application of algorithms of synchronized pulsewidth modulation (PWM) for control of five-phase voltage source inverters.
Oleschuk V.I.   +4 more
doaj  

A Generalized Scalar Pulse-width Modulation for Nine-switch Inverters

open access: yesEletrônica de Potência, 2014
The nine-switch inverter has been proposed recently and, since then, a large number of applications has been investigated, specially as a substitute to the dualbridge (back-to-back) converter. The main advantage of the nine-switch inverter is its lesser
Fabrício Bradaschia   +3 more
doaj   +1 more source

Flexible Pressure Sensor With Co‐Optimized Sensitivity and Linearity Based on Gradient Toroidal Microstructures

open access: yesAdvanced Materials Technologies, EarlyView.
A flexible piezoresistive pressure sensor with gradient toroidal CNT/PDMS microstructures is reported. The hierarchical geometry enables sequential electrode contact, achieving a sensitivity of 256.20 kPa−1 and linear response (R2 = 0.99) over 0–1000 kPa.
Rongmei Wang   +8 more
wiley   +1 more source

DUAL THREE-PHASE ADJUSTABLE SPEED DRIVE WITH SYNCHRONIZED SPACE-VECTOR MODULATION

open access: yesProblems of the Regional Energetics, 2008
Split-phase symmetrical motor drive on the base of two voltage source inverters, controlled by algorithms of synchronized pulse width modulation (PWM), has been investigated.
Oleschuk V.I.   +3 more
doaj  

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